Qiblah

Q: In my masjid, the qiblah is off by a bit. In between 35 - 43°. (Closer to 40° in most apps) 

They are getting new carpets fitted insha Allah. However, the committee are disputing on whether to face it to the qibla or keep it as it is. They will lose a few musalla spaces if they angle the carpets and it will make the carpets not match the building which they don't want. 

I've said, although the salaahs may be valid, it would be best to angle it and go closer to the qiblah, preferably within 20°. Could you give a final answer into the matter?

Q: I was travelling to Durban and stopped in Harrismith to make Zohr. On my was back I stopped again to make Zohr, and was told after I completed my salah that I was facing the wrong direction. I am not sure if the brother was correct, but do I need to repeat my salaah?

Q: When determining qiblah direction, would a Google earth search be considered a valid qiblah direction?

Q: I would like to confirm if the following is correct: 

1. Someone told me that when reading salaah, when facing the qibla, if you are a few degrees wrong then it is maaf.

2. If someone is reading salaah facing the wrong direction then you must turn them towards the right direction or tell them and they can turn to the right direction without breaking their salaah and their salaah will be accepted. 

Q: I had offered 2 rakaahs of sunnah after zuhr, but I forgot that I already offered it. So I offered it again, but I mistakenly faced the wrong direction instead of the Qiblah. Should I offer the sunnah again?

Q: On a trip out of town that necessitated qasar salaah, my sister checked the qibla direction using 2/3 apps. 2 gave a certain direction and the 3rd gave a different direction. We thus read our salaah according to the qibla direction from the two that were the same. However on the day we were leaving, I was on the balcony watching the sunrise and realised the sun was rising on the exact opposite direction of our qibla direction. In my understanding the qibla direction is north east and the sun rises in the east which meant our qibla was incorrect. Is this right? This doubt is lingering on my mind. Do I have to repeat my salaah? 

Q: I am working on a ship for 6 months at a time. Sometimes we go from America to China and I cannot find the qibla. On sea, our normal application does not work properly so it is difficult to find the qibla. I am performing salaah without knowing qibla direction. Is it permissible?

Q: A person goes to visit someone else and they read salaah in their house. Later on they discover that the qibla they faced in salaah was incorrect and was in the opposite direction. Do they have to repeat all the salaah they performed at the house (including in the past)?

Q: If someone performs his salaah facing the wrong direction, away from the qiblah, does he have to repeat his salaah?

Q: If a person prayed without using their Qibla compass, but estimated the Qibla location, but found out they prayed in the opposite direction, is their salat valid?